Pile-fabric loom



H. J. HOPE.

PILE FABRIC LOOM.

APPLlCATlON FILED AUG.3I, 1917.

1,304,879. Pafented May 27, 1919.

2 SHEETS-SHEET 2- Inventor.

Herbert \J. Hope Afiys.

HERBERT J. HOPE, OF SANFORD, MAINE.

TILE-FABRIC LOOM.

Specification of Letters Patent.

Patented Mayan 1919.

I Application filed August 31, 1917. Serial No; 189,054.

To all whom it may concern:

Be it known that I, HERBERT J. Horn, a citizen of the United States, residing at Sanford, county of York, State, of Maine, have invented an Improvement in Pile Fabric Looms, of which the following description,

in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates topile fabric looms of that type which are constructed for weaving figured goods, and the object of the invention is to provide a novel means for controlling, the pile warps so that they can be taken from a warp beam instead of from a creel of single spools. 4 a

r In the weaving of a pile fabric to produce figured goods, vit is customary to have the differentcolored pile warp threads or the difierent sets of warp threads from which the figures are made controlled by different harnesses, and as the different sets of pile warp threads whichare controlled by different harnesses are called ,for at different times, it is customary to use a creel of separate spools for the various pile warp threads, so that the proper tension may be maintained 011 each warp thread independ ently.

The objectof my invention is to provide a novel tension-controlling device for the various sets of warp threads by which the tension of each set of threads that is controlled by each harness can be varied independently, thus permitting the threads to be all taken from the same warp beam and yet to produce a satisfactory fabric.

In order to give an understanding of my invention, I have illustrated in the drawings a selected embodiment thereof'which will now be described, after which'the novel features will be pointed out in the appended claims.

Figure 1 is a diagrammatic view showing the harness frames of a pile fabric loom'and also showing my improved tension device;

Fig. 2 illustrates somewhat diagrammatically the dobby mechanism or head motion for operating the harnesses.

Inasmuch as the invention relates to the tension-controlling means for the various sets of warp threads, I have not thought it necessary to illustrate a complete loom.

In Fig. 1 I have indicated a plurality of harness frames, the two frames 1 and 2 being those which control the groundwarp threads 3 4:, and the harness frames 5, 6, 7, and 8, being those which control the pile warp threads 9, 10, 11 and 12. It will be understood, of course, that each harness frame 5, 6, 7 and 8 will control a plurality 0f warp threads, the number depending upon, the character of the pattern to be produced. In the weaving of the fabric, the harness'frames 5, 6, 7 and 8 are operated by suitable mechanism to bring up ateach pick of the loom the desired sets of warp threads 9, 10, 11 and 12 according to the pattern to be produced, it being understood that inthe weaving of the goods the pile wires will be inserted as the shed is formed to produce the desired'pile fabric. The pattern pro- 15, 16. Each harness lever is connected by a connection 17 with a so-called vibrator .duced will, ofcourse, depend upon the order 7 gear 18, and the vibrator gears are adapted to be rotated in one direction or the other therebyto raise or lower the harness frames by means of either one of two cylinder gears 19 and 20. Each vibrator gear 18 is carried by a lever 21 and the levers 21 are controlled by the usual pattern chain 22. As the pattern chain is moved forwardly, the levers 21 are raised orlowered according to the con.- struction of the pattern chain thereby bringing the various vibrator gears into engagement with either the cylinder gear 20 or the cylindergear l9. w Inasmuch as the above-described pattern mechanismis one that is familiar to those skilled in the art, I have not thought it necessary to enter into a more detailed description thereof.

In weaving a fancy pile fabric and especially one having a smallfigure in the pile warps, it is necessary to maintain a proper tension on the pile threads which are not looped over the pile Wires to form the figure of the fabric, and I provide for this by a novel construction which involves a plurality of tension rods, one for each of the sets of warps 9, 10, 11, 12, each tension rod operating to place tension on the warps of one set only. By thus controlling the tension of each set of warp threads 9, 10, 11 and 12 separately, it is possible to take the warp threads from a warp beam 40 instead of from separate spools. In the illustrated embodiment of my invention, the tension rods are indicated at 23, 24, 25 and 26, respectively, the tension rod 23 being applied to the set of warp threads 9; the tension rod 24: being applied to the set of warp threads 10; the tension rod 25 being applied to the set of warp threads 11; and the tension rod 26 being applied to the set of warp threads 12. These tension rods have their ends guided in suitable guide members or boxes 27 which are supported on the 100m frame 28. Each box is shown as having a plurality of guiding grooves or slots 29 therein in which the ends of the tension rods are freely received. The member 27 is also shown as sustaining two supporting bars 30 and 31 over which all the pile warp threads pass, said warps being taken from a suitable warp beam 40 and passing around the guiding bars 33. In practice, all the warp threads except those of the set 9 will pass over the tension rod 23, the warp threads of the set 9 passing under said rod 23 so that said warp threads 9 support the weight of the rod 23. Similarly, all of the pile warp threads except the set 10 pass over the tension rod 24, the warp threads 10 passing under said tension rod and supporting the weight thereof. Similarly, all the warp threads except the set 11 will pass over the tension rod 25, and all except the set 12 will pass over the tension rod 26. Thus the weight of the tension rod 23 is supported by the warp threads 9 only; the weight of the tension rod 24 is supported by the warp threads 10 only; the weight of the tension rod 25 is supported by the warp threads 11 only; and the weight of the tension rod 26 is supported by the warp threads 12 only.

The guiding slots 29 are of considerable length so as to allow for a considerable range of movement .of the tension rods. The

various tension rods may be of different sizes and weight, dependent on the amount of tension necessary to be applied to each set of pile warps. This will, of course, depend something upon the number of warps in each set. During the weaving operation, each tension rod acts on its particular set of warp threads to maintain the required tension thereon so that if during the weaving any set of warp threads is not called for for several picks the requisite tension' may be maintained on said warp threads even though the warp threads which are brought up toproduce the figure in the pile are being drawn from the warp beam faster than the warp threads which are not so selected. By means of this invention it is possible to take the pile warp threads directly from warp beams instead of from single spools and yet to maintain the desired tension on the threads of each set.

I claim:

1. In a pile fabric loom for weaving figured goods, the combination with a warp beam carrying a plurality of pile warp threads which are divided into groups or sets, of a separate harness frame controlling each set of pile warp threads, means for aotuating said harness frames selectively, and a separate tension rod for each set of pile warp threads, said tension rods being inde pendent from each other, and each tension rod being sustained entirely by the warp threads of the corresponding set.

2. In a pile fabric loom for weaving figured goods, the combination with a warp beam carrying a plurality of pile warp threads which are divided into groups or sets, of a separate harness frame controlling each set of pile warp threads, means for actuating said harness frames selectively, and a plurality of separate tension rods, one for each set of pile warp threads, each tension rod being supported entirely by the warp threads of the corresponding set and having a weight proportionate to the number of warp threads in the set.

In testimony whereof, I have signed my name to this specification.

HERBERT J. HOPE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I C. 

